Thanks Robin. Send V2: https://gcc.gnu.org/pipermail/gcc-patches/2023-November/638033.html with adding changeLog since I realize changlog issue in V1: gcc/ChangeLog: * config/riscv/riscv-v.cc (shuffle_extract_and_slide1up_patterns): (expand_vec_perm_const_1):
Tested on zvl128b/zvl256b/zvl512b/zvl1024b on both RV32 and RV64 no regression. Hope we can land it on GCC-14. juzhe.zh...@rivai.ai From: Robin Dapp Date: 2023-11-23 22:58 To: Juzhe-Zhong; gcc-patches CC: rdapp.gcc; kito.cheng; kito.cheng; jeffreyalaw Subject: Re: [PATCH] RISC-V: Optimize a special case of VLA SLP LGTM (and harmless enough) but I'd rather wait for a second look or a maintainer's OK as we're past stage 1 and it's not a real bugfix. (On top, it's Thanksgiving so not many people will even notice). On a related note, this should probably be a middle-end optimization but before a variable-index vec extract most likely nobody bothered. Regards Robin
